What a Riot

Watching the Canada Day celebrations in Ottawa on TV. More that 300k at the venue and on the streets. At the closing I imagined a riot breaking out, with the Duke and Duchess of Cambridge leaping on an overturned Harper, brandishing lighters and old oily rags to spur the anarchists on. On the news, fellow Royals and friends said it was totally out of character for the young newlyweds. But why did they bring lighters and oily rags to the ceremonies?